This week's book giveaways are in the Refactoring and Agile forums.
We're giving away four copies each of Re-engineering Legacy Software and Docker in Action and have the authors on-line!
See this thread and this one for details.
Win a copy of Re-engineering Legacy Software this week in the Refactoring forum
or Docker in Action in the Cloud/Virtualization forum!
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null values in hash map

 
sumi sudha
Greenhorn
Posts: 14
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i know hash map can accept null values and keys. can we give more than one null value or key in hashmap.
 
Paul Sturrock
Bartender
Posts: 10336
Eclipse IDE Hibernate Java
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More than one null value, yes. More than one null key, no; keys need to be unique.
 
sumi sudha
Greenhorn
Posts: 14
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Thanks Paul.
 
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